Help installing electric heater

madjay

I know what the Regs say ....but there is no difference between a 13amp Plug and a 13amp Fused Spur both carry a fuse up to 13amp but both the plug and spur are rated more than that. If you go and buy a 3kw heater today it will have a 13amp plug on it..

Most times in ths country you do not get 240volts you get less than that...

The plugs and Spur units are designed to carry up to 250 volts AC 50hertz 13amp.......that makes the plugs and spurs are rated at 3.25Kw

Don't just read the "Electrician's Guide to the 17th Edition IEE Wiring Regulations" try reading the Reg themself and what BS 1363 stand for.....it what you are not reading is the problem

Any one can read a book......some of us do sparking for a living

TimBuckTeeth

27col wrote: »

The UK was supposed to harmonise its supply voltage with the rest of the EU at 230v. It has not yet reduced it from 240v. If and when, it does so, then a 3kw load will take 13.04 amps at 230v. At the moment a 3kw load takes 12.5amps at 240v. ...........

The voltage is not likely to change, it was just the tolerances (eg. +-10% or whatever it is now) that have changed to allow a nominal 230V across europe.
A 3kW @ 240V heater will not take a higher current at a lower voltage, the current and power consumed will be lower.
However if a 3kW @ 230V heater is used with 240V-250V then the current and power will be higher, but only slightly, not enough to worry about.

It is best to fit a directly wired fused spur for a 3kW wall mounted heater, but a new well fitted plug and socket should be OK. However an old socket or poorly wired plug could get hot. A plug and socket is OK for a 2kW heater.

amtrakuk

It is prob best to have them on separate spurs from the consumer unit. If the heaters have a mechanical thermostat (click on/off) it may well create a small power spike.

It is worth calculating the load on the ring. I found out the hard way about loads on the ring and was told by the sparky who installed separate spurs about mechanical thermostats. Worth doing it properly if they are a permanent installation.

eco-friendly_2

It is prob best to have them on separate spurs from the consumer unit.

Concur, although the term I believe is a radial, not a spur.

madjay

eco-friendly wrote: »

Concur, although the term I believe is a radial, not a spur.

Depends on if it is wall mounted or free standing

amtrakuk

Sorry Peeps very true..